ASTROSAT CZTI

Data Quality Report

Orbit 08394

Creation date: 2024-06-27T15:31:53.551769
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_062T01_9000001176_08394cztM0_level2.evt modeM0/AS1A03_062T01_9000001176_08394cztM0_level2_quad_clean.evt
Size (bytes)435,695,04069,811,200
Size415.5 MB 66.6 MB
Events in quadrant A3,124,925426,842
Events in quadrant B3,253,955436,539
Events in quadrant C3,047,506417,249
Events in quadrant D3,348,966402,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128963
B0132562
C0128422
D0138972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175370.599190%
B6175570.923077%
C6175160.259109%
D6175721.165992%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8790 6177 0 0 0.00% 0.00%
B 8790 6177 1 1 0.01% 0.02%
C 8790 6177 0 0 0.00% 0.00%
D 8790 6177 40 40 0.46% 0.65%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 14 8782 48.65 811 796 164.1
A 0 226 7575 41.3 811 796 164.1
A 12 194 7171 38.84 811 796 164.1
B 4 81 54027 347.91 815 796 153.0
B 10 252 21413 134.75 815 796 153.0
B 12 111 16692 103.9 815 796 153.0
C 1 16 14096 73.98 778 784 180.0
C 13 61 6030 29.15 778 784 180.0
C 3 202 1952 6.49 778 784 180.0
D 2 14 180436 974.89 767 748 184.3
D 2 136 173729 938.5 767 748 184.3
D 1 52 31467 166.66 767 748 184.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter